Red phosphor for display device and display device including same

Abstract

A red phosphor is represented by the following Formula 1. (Y 1-x M x ) 1-z (V y M′ 1-y )O 4 :Eu z   [Formula 1] wherein, M is an element selected from the group consisting of Gd, In, La, Sc, Lu, and combinations thereof, M′ is an element selected from the group consisting of P, Nb, W, and combinations thereof, 0.00≦x≦1.00, 0.40<y≦1.00, and 0.01≦z≦0.20. A display device includes the red phosphor.

1 . A red phosphor for a display device, comprising a compound represented by the following Formula 1:
   (Y 1-x M x ) 1-z (V y M′ 1-y )O 4 :Eu z   [Formula 1]   wherein   M is an element selected from the group consisting of Gd, In, La, Sc, Lu, and combinations thereof,   M′ is an element selected from the group consisting of P, Nb, W, and combinations thereof,   0.00≦x≦1.00, 0.40<y≦1.00, and 0.01≦z≦0.20.   
     
     
         2 . The red phosphor of  claim 1 , wherein the M is Gd. 
     
     
         3 . The red phosphor of  claim 1 , wherein 0.00≦x≦0.1. 
     
     
         4 . The red phosphor of  claim 1 , wherein the M′ is P. 
     
     
         5 . The red phosphor of  claim 1 , wherein 0.5≦y≦0.7. 
     
     
         6 . The red phosphor of  claim 1 , wherein the red phosphor comprises a first phosphor that is the compound represented by the above Formula 1 and a second phosphor that is a compound represented by the following Formula 2:
   (Y 1-a Gd a ) 1-b BO 3 :Eu b   [Formula 2]   wherein 0.2≦a≦0.3 and 0.02<b<0.10.   
     
     
         7 . The red phosphor of  claim 6 , wherein the first phosphor and the second phosphor are present in the red phosphor in a ratio of 95:5 to 40:60 wt %. 
     
     
         8 . The red phosphor of  claim 7 , wherein the first phosphor and the second phosphor are present in the red phosphor in a ratio of 80:20 to 40:60 wt %. 
     
     
         9 . The red phosphor of  claim 8 , wherein the first phosphor and the second phosphor present in the red phosphor in a ratio of 80:20 to 60:40 wt %. 
     
     
         10 . The red phosphor of  claim 1 , wherein the display device is a device that provides a three-dimensional stereoscopic image. 
     
     
         11 . The red phosphor of  claim 1 , wherein the red phosphor has a decay time of 3.5 ms or less. 
     
     
         12 . The red phosphor of  claim 11 , wherein the red phosphor has a decay time of 1.8 to 3.5 ms. 
     
     
         13 . A display device comprising:
 one or more discharge cells coated with a phosphor layer that includes a red phosphor comprising a compound represented by the following Formula 1:
   (Y 1-x M x ) 1-z (V y M′ 1-y )O 4 :Eu z   [Formula 1] 
   wherein   M is an element selected from the group consisting of Gd, In, La, Sc, Lu, and combinations thereof,   M′ is an element selected from the group consisting of P, Nb, W, and combinations thereof,   0.00≦x≦1.00, 0.40<y≦1.00, and 0.01≦z≦0.20.   
     
     
         14 . The display device of  claim 13 , wherein the M is Gd. 
     
     
         15 . The display device of  claim 13 , wherein 0.00≦x≦0.1. 
     
     
         16 . The display device of  claim 13 , wherein the M′ is P. 
     
     
         17 . The display device of  claim 13 , wherein 0.5≦y≦0.7. 
     
     
         18 . The display device of  claim 13 , wherein the red phosphor comprises a first phosphor that is a compound represented by the above Formula 1 and a second phosphor that is a compound represented by the following Formula 2:
   (Y 1-a Gd a ) 1-b BO 3 :Eu b   [Formula 2]   wherein 0.2≦a≦0.3 and 0.02<b<0.10.   
     
     
         19 . The display device of  claim 18 , wherein the first phosphor and the second phosphor are present in the red phosphor in a ratio of 95:5 to 40:60 wt %. 
     
     
         20 . The display device of  claim 19 , wherein the first phosphor and the second phosphor are present in the red phosphor in a ratio of 80:20 to 40:60 wt %. 
     
     
         21 . The display device of  claim 19 , wherein the first phosphor and the second phosphor are present in the red phosphor in a ratio of 80:20 to 60:40 wt %. 
     
     
         22 . The display device of  claim 13 , wherein the red phosphor has a decay time of 3.5 ms or less. 
     
     
         23 . The display device of  claim 22 , wherein the red phosphor has a decay time of 1.8 to 3.5 ms. 
     
     
         24 . The display device of  claim 13 , wherein the display device is a device that provides a three-dimensional stereoscopic image